69 lines
2.0 KiB
Python
69 lines
2.0 KiB
Python
import os
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import subprocess
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import matplotlib.pyplot as plt
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def run_test(n, threads, threshold):
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cmd = f"./lab2 {n} {threads} {threshold}"
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process = subprocess.Popen(
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cmd.split(), stdout=subprocess.DEVNULL, stderr=subprocess.PIPE, text=True
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)
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_, err = process.communicate()
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for line in err.split("\n"):
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if "STAT:" in line:
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return float(line.split("time=")[1])
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return 0
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def build_benchmark():
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n_size = 500000
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threshold = 10000
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thread_counts = [0, 1, 2, 4, 8, 12, 16]
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times = []
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print(f"Запуск бенчмарка (N={n_size}, Порог={threshold})...")
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for t in thread_counts:
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t_exec = run_test(n_size, t, threshold)
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times.append(t_exec)
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print(f"Потоков: {t} | Время: {t_exec:.4f}с")
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plt.figure(figsize=(12, 5))
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# График времени
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plt.subplot(1, 2, 1)
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plt.plot(thread_counts, times, "o-", color="blue", label="Фактическое время")
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plt.xlabel("Кол-во потоков (0 = посл.)")
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plt.ylabel("Время выполнения (сек)")
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plt.title("Зависимость времени от потоков")
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plt.grid(True)
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plt.legend()
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# График ускорения
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plt.subplot(1, 2, 2)
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t_seq = times[0]
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speedup = [t_seq / x if x > 0 else 1 for x in times]
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plt.plot(thread_counts, speedup, "s-", color="green", label="Ускорение (S)")
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plt.plot(
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thread_counts,
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[x if x > 0 else 1 for x in thread_counts],
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"--",
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color="red",
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alpha=0.5,
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label="Идеал",
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)
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plt.xlabel("Кол-во потоков")
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plt.ylabel("S = T(послед) / T(паралл)")
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plt.title("График масштабируемости (Speedup)")
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plt.legend()
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plt.grid(True)
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plt.tight_layout()
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plt.savefig("out/performance_results.png")
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print("Графики сохранены в out/performance_results.png")
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if __name__ == "__main__":
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os.makedirs("out", exist_ok=True)
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build_benchmark()
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